【单选题】
一个栈的输入序列为1，2，3，4，5，下列序列中不可能是栈的输出序列的是___.
A. 2，3，4，1，5
B. 5，4，1，3，2
C. 2，3，1，4，5
D. 1，5，4，3，2
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相关试题
【单选题】
设某棵二叉树中有2000个结点，则该二叉树的最小高度为___
【单选题】
设某棵二叉树的高度为10.则该二叉树叶子结点最多有___
A. 20
B. 256
C. 512
D. 1024
【单选题】
操作系统是一种___。
A. 应用软件
B. 系统软件
C. 工具软件
D. 杀毒软件
【单选题】
操作系统的作用是___
A. 对计算机存储器进行管理
B. 实现软硬件的转换
C. 对外部设备进行管理
D. 控制和管理资源的使用
【单选题】
操作系统是___的接口
A. 用户与软件
B. 系统软件与应用软件
C. 主机与外设
D. 用户与计算机
【单选题】
在中文Windows7操作系统下，下列文件名中不正确的是___
A. abc.bak
B. 计算机-操作.doc
C. myfile>new.txt
D. myfle1+myfle2
【单选题】
以下软件中，___不是操作系统软件。
A. Windows7操作系统
B. UNX操作系统
C. Linux操作系统
D. Office2010
【单选题】
在Windows7操作系统中，若将剪贴板上的信息粘贴到某个文档窗口的插入点处，正确的操作是___。
A. 按[Ctrl+V]组合键
B. 按[Ctrl+Z]组合键
C. 按[Ctrl+C]组合键
D. 按[Ctrl+X]组合键
【单选题】
在Windows7操作系统中，可使用桌面上的___图标浏览和查看系统提供的所有软硬件资源，
A. 网络
B. 回收站
C. 计算机
D. 我的电脑
【单选题】
在Windows7操作系统中，选择某一文件夹，再选择“文件”一“删除”选项，则___
A. 只删除文件夹而不删除其所包含的文件
B. 删除文件夹内的某一程序文件
C. 删除文件夹所包含的所有文件而不删除文件夹
D. 删除文件夹及其所包含的全部文件与子文件夹
【单选题】
在Windows7操作系统中，使用搜索功能查找硬盘中的所有Word文档，可以在搜索栏输入关键字___
A. *.docx
B. ？.docx
C. &.docx
D. #.docx
【单选题】
可以通过按___组合键，在弹出的界面中选择“启动任务管理器”选项，弹出“Windows任务管理器”窗口。
A. [Ctrl+Alt+Shift]
B. [Ctrl+Alt+Homel
C. [Ctrl+Alt+Delete]
D. [Ctrl+Alt+Enter]
【单选题】
在Word2010編辑中，要移动或复制文本，可以用___来选择文本。
A. 鼠标
B. 键盘
C. 扩展选取
D. 以上方法都可以
【单选题】
在Word2010中要复制字符格式而不复制字符，需单击___按钮。
A. 格式刷
B. 格式选定
C. 格式工具框
D. 复制
【单选题】
一位同学正在撰写毕业论文，并且要求只用A4规格的纸输出，在打印预览中，发现最后一页只有一行，他想把这一行提到上-页，最好的办法是___。
A. 改变纸张大小
B. 增大页边距
C. 减小页边距
D. 把页面方向改为横向
【单选题】
用相对地址引用的单元格在公式复制中目标公式会___。
A. 不变
B. 变化
C. 使列地址变化
D. 使行地址变化
【单选题】
Excel2010 文档包括___
A. 工作表
B. 工作薄
C. 编辑区域
D. 以上都是
【单选题】
Excel 2010单元格D1中有公式=A1+$C1，将D1 格中的公式复制到E4格中，E4格中的公式为___。
A. =A4+$C4
B. =B4+$D4
C. =B4+$C4
D. =A4+C4
【单选题】
在PowerPoint 2010中，幻灯片内的动画效果可通过“动画”选项卡的___选项设置。
A. 动作设置
B. 自定义动画
C. 动画预览
D. 幻灯片切换
【单选题】
在PowerPoint2010中，在空白幻灯片中不可以直接插入___
A. 文本框
B. 文字
C. 艺术字
D. Word 表格
【单选题】
在“页眉和页脚”对话框中设置幻灯片编号，将放置到幻灯片中的___
A. 左下角
B. 中部
C. 右下角
D. 顶部
【单选题】
PowerPoint2010中，艺术字具有___
A. 文件属性
B. 图形属性
C. 字符属性
D. 文本属性编辑
【单选题】
目前计算机广泛应用于企业管理，它属于下列哪类应用。___
A. 实时控制
B. 科学计算
C. 数据处理
D. 辅助设计
【判断题】
公认的进界上第一台计算机是1946年在美国研制成功的。
【判断题】
字符B 的ASCII 码为1000010, 十进制值为66。
【判断题】
计算思维是人们最近发明的新的思维方式。
【判断题】
三大科学思维包括理论思维、实验思维、计算思维。
【判断题】
计算机不但有记忆功能，还有逻辑判断功能。
【判断题】
云计算由一系列可以动态升级和被虚拟化的资源组成。
【判断题】
国际上通用的字符编码是美国标准信息交换码，简称ABC码。
【判断题】
机外码是为了将汉字输入计算机而设计的汉字编码。
【判断题】
计算机中的所有信息都是用二进制表示的。
【判断题】
存储单元即计算机存储数据的地方。内存储器、CPU的“缓存”、硬盘、光驱都为存储单元。
【判断题】
计算机的主机内一般包括主板、CPU、内存储器、显卡、声卡、硬盘、光驱、数据线、信号线、电源等设备。
【判断题】
ROM是只读存储器，其中的内容只能读取一次。
【判断题】
CPU 的主频(时钟频率)是影响计算机性能的重要技术指标。主频越高，运算速度越快。
【判断题】
64位CPU的性能一定是32位CPU性能的2倍
【判断题】
硬盘通常安装在计算机的主机中，所以硬盘属于内存储器。
推荐试题
【单选题】
Emotional Intelligence (情商) could be of practical use in many ___ such as how companies decide which job applicant to hire, how parents should raise their children, how schools should teach the students, and so on.
A. aspects
B. disciplines
C. structures
D. opportunities
【单选题】
The teacher should praise students for their correct answers and also suggest ___ possibilities.
A. unlimited
B. unique
C. alternative
D. essential
【单选题】
In some classrooms, desks are arranged in a U-shape, so the teacher can ___ easily with the students.
A. interrupt
B. interact
C. interpret
D. interview
【单选题】
Computer technology ___ individuals to educate themselves and adapt to a constantly changing job market.
A. lets
B. makes
C. enables
D. provides
【单选题】
Our hope for an enjoyable dinner was instantly ___ when the waiter dropped a salad plate on my hea D.
A. spoiled
B. restricted
C. exploded
D. vanished
【单选题】
___ the world has ever seen has occurred in the information and communications technologies.
A. Great a change
B. The great change
C. A greatest change
D. The greatest change
【单选题】
___ so many people around, it wasn’t convenient to have a long talk with him.
A. As
B. When
C. With
D. Since
【单选题】
Alice used to be terribly shy, but working abroad for a year has completely ___ her.
A. solved
B. transformed
C. characterized
D. regulated
【单选题】
Chinese Mandarin (普通话) is ___ for foreigners to learn because the changes in the tone will totally change the meaning of words.
A. difficult
B. accessible
C. competitive
D. easy
【单选题】
Take action on those things that will have the biggest ___ impact on your life with the least amount of effort.
A. portable
B. positive
C. sophisticated
D. moderate
【单选题】
The adoption of this measure will greatly reduce the ___ of greenhouse gas emissions (排放物), which may help slow global warming.
A. loan
B. decline
C. release
D. response
【单选题】
I think I have a healthy lifestyle. I eat a lot of fruit and vegetables, and I’m a ___ drinker.
A. moderate
B. heavy
C. gradual
D. delicate
【单选题】
In a way the human race needs to improve its mental and physical qualities if it is to deal with the more and more ___ world and meet new challenges.
A. typical
B. complex
C. rational
D. orderly
【单选题】
If a person simply does not care about this activity, it’s ___ impossible to get him to participate.
A. barely
B. seldom
C. hardly
D. practically
【单选题】
Sometimes, even when the mind ___ functioning, the body keeps on working normally.
A. ceases
B. arouses
C. regulates
D. specializes
【单选题】
Jeffery expressed his ___ about the health and fitness of his co-workers, but they said they didn’t want to “waste time” on an exercise bike or jogging.
A. agony
B. concern
C. addiction
D. feedback
【单选题】
Such chemicals are indeed negatively ___ those humans to whom they are expose D.
A. risking
B. detecting
C. impacting
D. overwhelming
【单选题】
We regret for selling you the faulty product, and our company has agreed to ___ you by $500.
A. match
B. reverse
C. reward
D. compensate
【单选题】
This lecture taught me how to manage my time better to include my online studies in my busy ___.
A. schedule
B. outline
C. structure
D. responsibility
【单选题】
Generally speaking, an Irish person will not accept an offer straight away; he will ___ once or twice first before accepting it.
A. receive
B. decline
C. summarize
D. polish
【单选题】
There is every possibility that many species (物种) of animals will die out because of their disappearing food ___.
A. mode
B. source
C. pattern
D. foundation
【单选题】
As a college student, you should enjoy learning and get yourself ___ in those things that interest you.
A. concerned
B. devoted
C. involved
D. pursued
【单选题】
The name of Hitler (希特勒) has always been associated with war and ___ killing in the minds of those people who lived through World War Two.
A. imaginary
B. multiple
C. indispensable
D. massive
【单选题】
He works hard every day to make more money, but he ___ his health, time with his family, and the hobbies he once love D.
A. neglects
B. reminds
C. ceases
D. Declines
【单选题】
I asked a passenger sitting beside me if our train was the Westlake Express train, and he said he ___ of it.
A. not even heard
B. had not even heard
C. even not heard
D. ever had not heard
【单选题】
Whatever you say in the paper has to ___ your own thinking; hence simply repeating the professor’s opinions or whatever is in the readings will not get you very far.
A. ignore
B. arouse
C. reflect
D. release
【单选题】
We are sorry to know that they did not succeed ___ the project for lack of necessary funds.
A. to fulfill
B. to have fulfilled
C. in fulfilling
D. with fulfilling
【单选题】
It is surprising that fewer students were prepared to undertake the ___ to hand in written work on a regular basis, or to study over long periods.
A. engagement
B. commitment
C. authority
D. aspiration
【单选题】
Emily felt hurt and ___ by a close friend who had borrowed a considerable sum of money to pay for a house and then took it as a gift, never thinking of giving back the money.
A. conflicted
B. curbed
C. swollen
D. betrayed
【单选题】
In 1988 the old system was ___ in the country and a new system was introduced to take effect in 1990.
A. transmitted
B. abolished
C. assumed
D. compensated
【单选题】
We should not ___ ourselves to the classroom. We should go out of the classroom, see the world and talk to others as much as we can.
A. entertain
B. confine
C. assign
D. involve
【单选题】
I have always been grateful ___ Fred __the generous and helpful information when I was at the crossroads.
A. to … for
B. to … with
C. for … with
D. for … to
【单选题】
I think we both need to ___ the past, be happy about what we had for a time, learn from our experiences, and move on from there.
A. let go of
B. give authority to
C. make sense of
D. keep up with
【单选题】
My brother and I managed to ___ with each other and we soon made peace after a week’s quarrel.
A. heal
B. reconcile
C. respond
D. advocate
【单选题】
The two robbers in a stolen car tried to ___ a police roadblock (路障), but faile D.
A. break in
B. break off
C. break up
D. break through
【单选题】
Because of his long illness, Lee’s English level had dropped, but he was determined to ___ the other students by working harder.
A. put up with
B. catch up with
C. get along with
D. fill up with
【单选题】
We appreciate your efforts in making changes in your schedule and think that this new arrangement is now ___ to us.
A. agreeable
B. sustainable
C. portable
D. indispensable
【单选题】
The woman who died in a car crash last Saturday in the suburbs has been ___ as Kate Johnson, a 25-year-old office clerk.
A. justified
B. identified
C. notified
D. classified
【单选题】
My nephew failed in the College Entrance Examination, and we were all very sorry that he did not ___ to the university.
A. take it
B. get it
C. make it
D. succeed it
【单选题】
Almost half of that group will experience stress ___ enough to call for professional help.
A. tense
B. moderate
C. bearable
D. intense
